摘要:
An RE123-based superconducting wire includes a base material, an intermediate layer formed on the base material, and an oxide superconducting layer which is formed on the intermediate layer and includes an oxide superconductor having a composition formula represented by RE1Ba2Cu3O7−δ (RE represents one or two or more rare earth elements), in which the oxide superconducting layer includes 0.5 to 10 mol % of a Hf-including compound dispersed in the oxide superconducting layer as an artificial pinning center, a film thickness d of the oxide superconducting layer is d>1 μm, and a current characteristic of Jcd/Jc1≧0.9 (Jc1 represents a critical current density when the thickness of the oxide superconducting layer is 1 μm, and Jcd represents the critical current density when the thickness of the oxide superconducting layer is d μm) is satisfied.
摘要:
Provided is an oxide superconducting wire material, wherein pinning of magnetic flux, under an environment in which magnetic field is applied, can be conducted efficiently towards any magnetic-field applying angle direction, to secure a high superconductive property. The oxide superconducting wire material (100) is provided with a metal substrate (110), an intermediate layer (120) formed upon the metal substrate (110), and a REBaCuO-system superconductive layer (140) formed upon the intermediate layer (120). RE comprises one or more elements selected from Y, Nd, Sm, Eu, Gd, and Ho. Oxide particles including Zr are distributed within the superconductive layer (140) as magnetic-flux pinning points (145), and the mole ratio (y) of Ba included within the superconductive layer (140) is, when the mole ratio of Zr is assumed to be x, within a range of (1.2+ax)≦y≦(1.8+ax), wherein 0.5≦a≦2.
摘要翻译:提供了一种氧化物超导线材,其中在施加磁场的环境下磁通的钉扎可以有效地向任何磁场施加角度方向传导,以确保高的超导性能。 氧化物超导线材(100)设置有金属基板(110),形成在金属基板(110)上的中间层(120)和形成在中间层(120)上的REBaCuO系超导层(140) )。 RE包括选自Y,Nd,Sm,Eu,Gd和Ho中的一种或多种元素。 包含Zr的氧化物粒子作为磁通钉扎点(145)分布在超导层(140)内,并且当考虑Zr的摩尔比时,超导层(140)中包含的Ba的摩尔比(y)为 在(1.2 + ax)@ y @(1.8 + ax)的范围内为x,其中0.5 @ a @ 2。
摘要:
A substrate for an oxide superconductor including: a metal base; an interlayer of MgO formed on the metal base by ion beam assisted deposition method (IBAD METHOD); and a cap layer that is formed directly on the interlayer and has a higher degree of crystal orientation than that of the interlayer, in which the interlayer of MgO is subjected to a humidity treatment prior to formation of the cap layer.
摘要:
Provided is a substrate for superconductive film formation, which includes a metal substrate, and an oxide layer formed directly on the metal substrate, containing chromium oxide as a major component and having a thickness of 10-300 nm and an arithmetic average roughness Ra of not more than 50 nm. A method of manufacturing a substrate for superconductive film formation, which includes forming an oxide layer directly on a metal substrate, the oxide layer containing chromium oxide as a major component and having a thickness of 10-300 nm and an arithmetic average roughness Ra of not more than 50 nm.
摘要:
This invention provides a production process of a tape-shaped superconductor which can realize high Jc and Ic values by virtue of the elimination of the cause of generation of cracks and deterioration of an electrical connectivity in crystal grain boundaries. In producing an Re-base (123) superconductor on a substrate by an MAD process, the use of a raw material solution having a Re:Ba:Cu molar ratio of 1:X:3, wherein X is a Ba molar ratio satisfying X
摘要翻译:本发明提供了一种带状超导体的制造方法,其通过消除裂纹的产生和晶粒边界的电连接性的劣化,可以实现高的Jc和Ic值。 在通过MAD工艺在基板上制造Re(123)超导体时,使用Re:Ba:Cu摩尔比为1:X:3的原料溶液,其中X为满足X的Ba摩尔比 <2(优选1.0 <= X <= 1.8,特别是1.3 <= x <= 1.7)可以实现具有Jc = 3.20MA / cm 2的超导性和Ic = 525A的厚膜带状超导体的生产 / cm(X = 1.5)。
摘要:
100-800 nm ReBCO films with critical current density (Jc) values in excess of 1 MA/cm2 were fabricated from aqueous nitrate precursor solutions with additives. Additives such as polyethylene glycol (PEG) and sucrose were selected to suppress crystallization of barium nitrate. This produces higher concentration solutions resulting in thicker crack-free single layers. Additional water-soluble viscosity modifiers, such as polyvinyl alcohol (PVA) or cellulose-derivatives, were used to increase thickness and allow wetting of ceramic surfaces. Water vapor present at higher temperatures during heat-treatment damaged the films, while the role of water vapor at lower temperatures is still under investigation.
摘要翻译:由具有添加剂的硝酸盐前体溶液制备具有超过1MA / cm 2的临界电流密度(Jc)值的100-800nm ReBCO膜。 选择添加剂如聚乙二醇(PEG)和蔗糖以抑制硝酸钡的结晶。 这产生更高的浓度溶液,导致更厚的无裂纹单层。 使用额外的水溶性粘度调节剂,例如聚乙烯醇(PVA)或纤维素衍生物来增加厚度并允许陶瓷表面的润湿。 在热处理过程中,较高温度下的水蒸汽会损坏膜,而在较低温度下的水蒸汽作用仍在调查之中。
摘要:
Provided is a substrate for superconductive film formation, which includes a metal substrate, and an oxide layer formed directly on the metal substrate, containing chromium oxide as a major component and having a thickness of 10-300 nm and an arithmetic average roughness Ra of not more than 50 nm. A method of manufacturing a substrate for superconductive film formation, which includes forming an oxide layer directly on a metal substrate, the oxide layer containing chromium oxide as a major component and having a thickness of 10-300 nm and an arithmetic average roughness Ra of not more than 50 nm.
摘要:
An oxide superconducting tape comprised of a substrate on which a GdBa2Cu3O7-δ (δ=0 to 1) superconductor layer is formed, characterized in that,inside of said superconductor layer, columnar or rod-shaped BaZrO3 crystals are dispersed such that they are inclined from c-axis of the superconducting crystals and that BaZrO3 crystals adjacent in longitudinal directions are in a skew position.
摘要:
The present invention relates to a rare earth element oxide superconductive wire material improved in orientation by forming the bed layer by the MOD method. In the superconductive wire material (10) produced by forming a MOD-CZO layer (2), an IBS-GZO (3), an IBAD-MgO layer (4), a LMO layer (5), a PLD-CeO2 layer (6) and a PLD-GdBCO superconductive layer (8) in this order on an electropolished substrate (1) in an oxygen atmosphere, the CeO2 layer has a value of Δφ=4.2 degrees, which is almost the same as in the case of using a mechanically polished substrate, and the GdBCO super conductive layer has a value of Ic=243 A (Jc=up to 5 MA/cm2), which is almost the same as in the case of using a mechanically polished substrate.